Need help with lt-1

SS LT-1 · 07-12-2009, 07:56 PM

I have a 96 it starts but back fires some at idle and real bad under load. I thought it was opti replaced that 3 times no differance also replaced coil, icm, plugs wires, opti connecter, iac, and have tried adjusting the rockers but is still doing it. Could it be i am just not adjusting the rockers right? Any tips or help will be greatly appriciated

HITN94 · 07-15-2009, 02:13 PM

ive seen bad injectors cause one to backfire like that. i wouldnt go buy a set though, i would find a known good set to test with

383nitrouZ · 07-19-2009, 06:39 AM

does it do it as soon as you crank the car up? or after it warms up?

slo-nova · 08-16-2009, 01:32 PM

check the MAP sensor

oofighter · 10-21-2009, 11:23 PM

Check timing, or computer tunning....?

Mir · 10-22-2009, 04:59 AM

Quote:

Originally posted by slo-nova
check the MAP sensor

MAF

slo-nova · 11-01-2009, 03:55 AM

Quote:

Originally posted by Mir
MAF

NO MAP not MAF they are ywo diffrent parts

Mir · 11-01-2009, 07:13 AM

I didn't knew

96 LT1 have MAP sensor, I thought they use only MAF

slo-nova · 11-02-2009, 12:08 AM

Quote:

Originally posted by Mir
I didn't knew 96 LT1 have MAP sensor, I thought they use only MAF

First locate a 1996 camaro
Pull the hood latch which is located on the driver side of the car
Open hood
Look at engine bay on the left side close to the top of the intake there will be rectangular module which is approx 1 inch by by 2.5 inch and about 1/4 of an inch thick with a plug coming from the bottom of it

That would be your MAP sensor
If you need to know where the MAF is located feel free to ask

Mir · 11-02-2009, 03:15 AM

Self Note* Need to carefulll when answering late Night

How Could I not know the MAP sensor!

powerdriven · 01-19-2010, 04:03 PM

a common problem on these ive noticed. I always thought opti spark but all have mine have been the fuel pump. Even though they work fine, they dont put out enough volume during a load. Look at the fuel pump, i like the walboro ones the best.

Troll Account · 01-23-2010, 01:15 AM

Quote:

Originally Posted by slo-nova

First locate a 1996 camaro
Pull the hood latch which is located on the driver side of the car
Open hood
Look at engine bay on the left side close to the top of the intake there will be rectangular module which is approx 1 inch by by 2.5 inch and about 1/4 of an inch thick with a plug coming from the bottom of it

That would be your MAP sensor
If you need to know where the MAF is located feel free to ask

WS Sick · 03-04-2010, 05:11 PM

Did you do anykind of maintenance before this started, in other words is it self induced, I noticed you said adjusting the rockers didnt help it any, what was the reason you went to the rockers, did you put new ones on recently?
Have you changed plugs recently and may have some plug wires crossed?
Is there a hole in the intake bellow between the throttle body and MAF?

cbra_klr · 06-08-2010, 12:50 AM

ive had that problem when the right side if my injectors shut down. (bad wires to fuse block). do you have adj fuel pressure reg? if so turn it up and see what happens.